From 6365d1fef7527e93ec0da309358d99484bdeb2cc Mon Sep 17 00:00:00 2001
From: kplaczek <kplaczek@wi.ps.pl>
Date: Fri, 3 Dec 2021 19:25:51 +0100
Subject: [PATCH] 3rd and 2nd day

---
 01/index.php |   17 -
 01/part1.php |   17 +
 01/part2.php |   18 +
 02/input     | 3000 +++++++++++++++++---------------------------------
 02/part1.php |   15 +
 02/part2.php |   23 +
 03/input     | 1000 +++++++++++++++++
 03/part1.php |   19 +
 03/part2.php |   11 +
 9 files changed, 2103 insertions(+), 2017 deletions(-)
 delete mode 100644 01/index.php
 create mode 100644 01/part1.php
 create mode 100644 01/part2.php
 create mode 100644 02/part1.php
 create mode 100644 02/part2.php
 create mode 100644 03/input
 create mode 100644 03/part1.php
 create mode 100644 03/part2.php

diff --git a/01/index.php b/01/index.php
deleted file mode 100644
index 50d9d60..0000000
--- a/01/index.php
+++ /dev/null
@@ -1,17 +0,0 @@
-<?php
-/**
- *
- */
-
-$increased = 0;
-$inputStream = fopen('input', 'r');
-$previousReading = (int)fgets($inputStream);
-while (($line = fgets($inputStream)) !== false) {
-    $line = (int)$line;
-    if ($line > $previousReading) {
-        $increased++;
-    }
-    $previousReading = $line;
-}
-fclose($inputStream);
-echo $increased; //1553
diff --git a/01/part1.php b/01/part1.php
new file mode 100644
index 0000000..1919c2c
--- /dev/null
+++ b/01/part1.php
@@ -0,0 +1,17 @@
+<?php
+/**
+ *
+ */
+
+$increased = 0;
+$input = file('input', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
+$input = array_map('intval', $input);
+$previousReading = array_shift($input);
+
+foreach ($input as $line) {
+    if ($line > $previousReading) {
+        $increased++;
+    }
+    $previousReading = $line;
+}
+echo $increased; //1553
diff --git a/01/part2.php b/01/part2.php
new file mode 100644
index 0000000..3221ad9
--- /dev/null
+++ b/01/part2.php
@@ -0,0 +1,18 @@
+<?php
+/**
+ *
+ */
+
+$input = file('input', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
+$input = array_map('intval', $input);
+
+$increased       = 0;
+$previousReading = array_sum(array_slice($input, 0, 3));
+for ($i = 1; $i < count($input) - 2; $i++) {
+    $currentReading = array_sum(array_slice($input, $i, 3));
+    if ($currentReading > $previousReading) {
+        $increased++;
+    }
+    $previousReading = $currentReading;
+}
+echo $increased; // 1597
\ No newline at end of file
diff --git a/02/input b/02/input
index 3af412a..315cd7a 100644
--- a/02/input
+++ b/02/input
@@ -1,2000 +1,1000 @@
-118
-121
-123
-125
-134
-132
-137
-135
-136
-137
-138
-139
-163
-170
-171
-159
-161
-162
-156
-155
-151
-168
-172
-166
-159
-180
-187
-172
-161
-162
-161
-183
-182
-185
-175
-173
-174
-177
-192
-191
-190
-219
-225
-226
-216
-226
-230
-234
-236
-244
-235
-245
-266
-299
-300
-281
-291
-309
-303
-333
-332
-309
-312
-313
-314
-315
-339
-351
-353
-352
-338
-343
-337
-346
-338
-335
-332
-329
-345
-347
-332
-339
-354
-373
-376
-397
-400
-401
-433
-434
-440
-434
-438
-443
-448
-452
-456
-450
-459
-463
-464
-488
-492
-488
-506
-507
-516
-523
-524
-522
-546
-551
-553
-554
-553
-562
-559
-567
-569
-556
-557
-577
-581
-582
-591
-593
-594
-595
-598
-602
-611
-623
-604
-613
-603
-607
-612
-616
-612
-613
-612
-598
-607
-622
-619
-636
-638
-639
-637
-659
-657
-677
-678
-679
-655
-651
-655
-654
-662
-666
-672
-673
-676
-683
-684
-693
-688
-691
-698
-702
-704
-706
-707
-710
-709
-725
-731
-729
-767
-779
-780
-807
-806
-808
-815
-812
-811
-819
-820
-821
-822
-826
-812
-810
-820
-817
-803
-808
-826
-831
-837
-842
-839
-840
-827
-838
-840
-841
-842
-848
-841
-838
-839
-838
-839
-841
-821
-812
-813
-796
-817
-820
-845
-854
-857
-858
-866
-869
-870
-881
-882
-888
-889
-891
-886
-891
-901
-930
-940
-944
-943
-958
-952
-916
-903
-905
-907
-910
-915
-907
-906
-907
-919
-921
-923
-925
-924
-929
-931
-936
-937
-935
-953
-962
-968
-980
-981
-1003
-1005
-1006
-1011
-1013
-1014
-1015
-1016
-1015
-995
-1002
-1018
-1020
-1031
-1043
-1038
-1039
-1040
-1041
-1043
-1037
-1041
-1050
-1052
-1048
-1049
-1050
-1053
-1057
-1064
-1067
-1068
-1078
-1086
-1098
-1103
-1119
-1138
-1114
-1115
-1129
-1130
-1143
-1138
-1141
-1150
-1153
-1146
-1155
-1157
-1145
-1146
-1147
-1145
-1144
-1158
-1163
-1167
-1171
-1174
-1176
-1188
-1207
-1205
-1208
-1212
-1216
-1222
-1231
-1233
-1249
-1253
-1269
-1231
-1235
-1242
-1241
-1246
-1247
-1263
-1266
-1259
-1260
-1279
-1280
-1281
-1285
-1284
-1285
-1296
-1300
-1302
-1319
-1312
-1313
-1325
-1342
-1344
-1361
-1349
-1363
-1367
-1366
-1346
-1347
-1369
-1385
-1386
-1397
-1401
-1402
-1396
-1397
-1400
-1395
-1400
-1411
-1419
-1427
-1446
-1445
-1459
-1460
-1464
-1472
-1482
-1474
-1475
-1476
-1481
-1484
-1487
-1494
-1497
-1494
-1495
-1498
-1501
-1511
-1521
-1528
-1533
-1535
-1544
-1518
-1521
-1509
-1533
-1537
-1540
-1545
-1546
-1544
-1564
-1553
-1576
-1577
-1563
-1560
-1564
-1569
-1570
-1571
-1573
-1576
-1573
-1596
-1597
-1593
-1597
-1596
-1592
-1597
-1578
-1555
-1576
-1584
-1585
-1584
-1594
-1598
-1608
-1613
-1614
-1606
-1608
-1621
-1648
-1614
-1615
-1606
-1609
-1610
-1625
-1638
-1640
-1617
-1655
-1661
-1644
-1648
-1649
-1653
-1675
-1674
-1681
-1679
-1682
-1683
-1695
-1696
-1699
-1700
-1701
-1704
-1709
-1729
-1732
-1739
-1742
-1746
-1748
-1746
-1753
-1744
-1752
-1749
-1750
-1758
-1762
-1767
-1771
-1772
-1761
-1763
-1784
-1804
-1809
-1792
-1787
-1806
-1809
-1815
-1817
-1828
-1821
-1824
-1823
-1824
-1841
-1840
-1833
-1840
-1842
-1863
-1862
-1865
-1866
-1868
-1878
-1887
-1897
-1905
-1906
-1913
-1908
-1915
-1930
-1928
-1922
-1925
-1927
-1928
-1939
-1938
-1946
-1947
-1954
-1955
-1959
-1961
-1951
-1945
-1949
-1954
-1959
-1961
-1962
-1964
-1960
-1956
-1958
-1975
-1990
-1994
-2002
-2004
-2011
-2010
-2020
-2042
-2043
-2046
-2047
-2044
-2048
-2065
-2074
-2075
-2086
-2088
-2094
-2098
-2092
-2083
-2082
-2084
-2094
-2097
-2099
-2098
-2101
-2104
-2112
-2118
-2105
-2108
-2109
-2104
-2105
-2103
-2114
-2144
-2138
-2139
-2142
-2114
-2120
-2139
-2147
-2153
-2190
-2191
-2197
-2193
-2206
-2216
-2225
-2230
-2232
-2258
-2264
-2236
-2264
-2289
-2306
-2307
-2315
-2319
-2322
-2277
-2279
-2271
-2279
-2285
-2290
-2297
-2316
-2317
-2320
-2329
-2330
-2323
-2326
-2327
-2331
-2336
-2341
-2348
-2352
-2386
-2396
-2401
-2400
-2401
-2418
-2419
-2429
-2432
-2430
-2428
-2406
-2401
-2434
-2435
-2443
-2463
-2478
-2479
-2481
-2482
-2486
-2490
-2491
-2492
-2496
-2497
-2499
-2507
-2525
-2522
-2523
-2522
-2521
-2526
-2531
-2530
-2525
-2526
-2537
-2533
-2534
-2542
-2544
-2531
-2539
-2546
-2550
-2551
-2553
-2554
-2552
-2562
-2566
-2551
-2583
-2587
-2601
-2605
-2604
-2610
-2628
-2639
-2641
-2654
-2657
-2676
-2672
-2686
-2694
-2677
-2693
-2694
-2707
-2696
-2710
-2753
-2752
-2722
-2723
-2724
-2741
-2746
-2753
-2763
-2764
-2805
-2806
-2810
-2811
-2823
-2854
-2855
-2852
-2872
-2873
-2867
-2876
-2881
-2885
-2899
-2900
-2901
-2903
-2918
-2912
-2924
-2915
-2920
-2932
-2942
-2943
-2934
-2953
-2960
-2956
-2957
-2959
-2982
-2991
-3016
-3018
-3047
-3032
-3048
-3051
-3056
-3063
-3064
-3063
-3065
-3066
-3070
-3075
-3069
-3075
-3073
-3074
-3083
-3086
-3097
-3093
-3082
-3077
-3098
-3105
-3128
-3144
-3148
-3174
-3173
-3172
-3171
-3169
-3176
-3180
-3166
-3165
-3182
-3183
-3206
-3207
-3208
-3211
-3215
-3214
-3220
-3233
-3234
-3248
-3249
-3252
-3253
-3254
-3256
-3258
-3266
-3265
-3266
-3274
-3291
-3275
-3291
-3294
-3299
-3292
-3293
-3306
-3292
-3291
-3290
-3291
-3295
-3296
-3288
-3294
-3305
-3308
-3315
-3319
-3327
-3332
-3334
-3332
-3342
-3346
-3347
-3348
-3360
-3370
-3371
-3373
-3379
-3387
-3386
-3389
-3393
-3398
-3405
-3406
-3413
-3417
-3431
-3433
-3434
-3438
-3442
-3443
-3445
-3446
-3447
-3448
-3454
-3439
-3450
-3451
-3453
-3452
-3455
-3462
-3466
-3475
-3479
-3476
-3479
-3480
-3484
-3486
-3489
-3491
-3505
-3506
-3510
-3513
-3530
-3532
-3537
-3540
-3542
-3553
-3558
-3570
-3569
-3570
-3569
-3570
-3565
-3559
-3561
-3556
-3557
-3575
-3585
-3590
-3592
-3593
-3602
-3619
-3623
-3624
-3669
-3671
-3672
-3683
-3686
-3699
-3708
-3709
-3714
-3713
-3718
-3719
-3742
-3729
-3730
-3731
-3729
-3727
-3741
-3742
-3741
-3742
-3734
-3740
-3744
-3734
-3737
-3738
-3739
-3759
-3760
-3761
-3750
-3751
-3753
-3745
-3744
-3731
-3733
-3725
-3750
-3757
-3767
-3768
-3774
-3777
-3791
-3815
-3816
-3817
-3819
-3820
-3825
-3835
-3836
-3858
-3861
-3860
-3844
-3846
-3847
-3877
-3906
-3910
-3912
-3940
-3941
-3975
-3980
-3983
-3987
-4016
-4028
-4047
-4066
-4061
-4058
-4061
-4066
-4088
-4089
-4092
-4098
-4105
-4110
-4111
-4103
-4108
-4082
-4087
-4086
-4087
-4082
-4083
-4084
-4104
-4110
-4111
-4119
-4128
-4133
-4113
-4129
-4128
-4129
-4121
-4123
-4126
-4132
-4133
-4143
-4149
-4148
-4147
-4145
-4142
-4143
-4146
-4138
-4139
-4141
-4147
-4148
-4160
-4156
-4162
-4173
-4179
-4181
-4190
-4191
-4190
-4191
-4192
-4193
-4194
-4208
-4211
-4215
-4226
-4223
-4227
-4230
-4250
-4248
-4267
-4260
-4274
-4275
-4278
-4291
-4298
-4304
-4314
-4315
-4317
-4319
-4325
-4326
-4327
-4349
-4345
-4356
-4360
-4365
-4366
-4370
-4385
-4384
-4386
-4399
-4423
-4397
-4410
-4409
-4388
-4393
-4397
-4402
-4403
-4418
-4413
-4418
-4417
-4418
-4422
-4411
-4374
-4403
-4412
-4427
-4445
-4449
-4453
-4458
-4459
-4465
-4447
-4448
-4450
-4460
-4464
-4465
-4467
-4472
-4486
-4484
-4482
-4507
-4512
-4525
-4524
-4525
-4527
-4522
-4521
-4524
-4550
-4551
-4552
-4550
-4554
-4555
-4586
-4578
-4582
-4594
-4588
-4592
-4595
-4598
-4599
-4614
-4615
-4623
-4632
-4633
-4655
-4661
-4662
-4690
-4689
-4690
-4694
-4704
-4705
-4694
-4697
-4702
-4703
-4704
-4703
-4709
-4714
-4722
-4728
-4741
-4761
-4767
-4768
-4770
-4775
-4778
-4770
-4788
-4789
-4802
-4805
-4808
-4811
-4819
-4812
-4813
-4821
-4838
-4839
-4843
-4817
-4821
-4824
-4820
-4843
-4845
-4849
-4852
-4872
-4873
-4870
-4885
-4902
-4920
-4921
-4923
-4936
-4930
-4932
-4933
-4931
-4949
-4974
-4976
-4977
-4978
-4990
-4991
-5001
-5002
-5001
-5027
-5026
-5021
-5054
-5055
-5056
-5059
-5064
-5065
-5074
-5081
-5093
-5095
-5100
-5113
-5125
-5126
-5137
-5142
-5123
-5118
-5117
-5118
-5125
-5135
-5142
-5154
-5165
-5158
-5146
-5148
-5149
-5163
-5176
-5177
-5169
-5171
-5168
-5186
-5191
-5196
-5197
-5224
-5226
-5224
-5215
-5213
-5214
-5198
-5201
-5202
-5213
-5214
-5216
-5251
-5255
-5259
-5262
-5259
-5261
-5264
-5273
-5281
-5254
-5265
-5280
-5289
-5294
-5298
-5309
-5310
-5298
-5297
-5306
-5311
-5301
-5306
-5289
-5287
-5300
-5299
-5301
-5308
-5314
-5323
-5329
-5330
-5324
-5325
-5332
-5335
-5332
-5333
-5334
-5337
-5345
-5351
-5355
-5364
-5366
-5382
-5391
-5408
-5400
-5402
-5405
-5390
-5391
-5394
-5407
-5409
-5410
-5411
-5412
-5416
-5412
-5424
-5426
-5425
-5426
-5434
-5421
-5433
-5440
-5441
-5435
-5424
-5417
-5413
-5414
-5415
-5418
-5420
-5421
-5444
-5442
-5433
-5435
-5436
-5437
-5407
-5406
-5424
-5427
-5433
-5434
-5438
-5441
-5443
-5444
-5445
-5446
-5453
-5464
-5465
-5478
-5474
-5462
-5463
-5491
-5498
-5499
-5500
-5501
-5504
-5506
-5530
-5524
-5517
-5521
-5530
-5532
-5538
-5544
-5541
-5554
-5556
-5553
-5554
-5556
-5562
-5563
-5568
-5572
-5584
-5581
-5584
-5582
-5586
-5588
-5599
-5602
-5603
-5601
-5610
-5607
-5602
-5604
-5600
-5602
-5605
-5606
-5608
-5606
-5610
-5619
-5620
-5619
-5623
-5624
-5626
-5627
-5628
-5630
-5637
-5650
-5674
-5677
-5661
-5669
-5675
-5676
-5681
-5685
-5687
-5709
-5713
-5714
-5724
-5728
-5729
-5727
-5741
-5755
-5741
-5730
-5724
-5727
-5726
-5730
-5731
-5732
-5734
-5733
-5734
-5735
-5736
-5737
-5736
-5730
-5732
-5742
-5744
-5747
-5755
-5760
-5755
-5757
-5768
-5793
-5798
-5799
-5805
-5808
-5810
-5812
-5814
-5815
-5817
-5850
-5851
-5839
-5860
-5870
-5871
-5879
-5886
-5897
-5904
-5908
-5907
-5911
-5910
-5914
-5916
-5917
-5919
-5917
-5928
-5930
-5931
-5932
-5941
-5944
-5946
-5951
-5931
-5905
-5930
-5936
-5937
-5935
-5936
-5942
-5944
-5951
-5916
-5899
-5892
-5891
-5902
-5907
-5951
-5952
-5957
-5958
-5961
-5965
-5969
-5974
-5975
-5953
-5956
-5965
-5985
-5987
-6017
-6016
-6017
-5990
-5991
-5999
-5993
-5995
-6016
-6017
-6014
-6049
-6042
-6053
-6055
-6068
-6069
-6074
-6072
-6079
-6074
-6076
-6066
-6065
-6067
-6098
-6104
-6116
-6115
-6113
-6099
-6100
-6101
-6100
-6111
-6115
-6140
-6106
-6107
-6117
-6131
-6135
-6144
-6118
-6113
-6118
-6128
-6129
-6135
-6138
-6143
-6144
-6142
-6144
-6145
-6144
-6147
-6151
-6149
-6150
-6151
-6135
-6136
-6132
-6118
-6113
-6120
-6117
-6118
-6122
-6125
-6126
-6124
-6131
-6132
-6135
-6136
-6154
-6160
-6167
-6179
-6181
-6186
-6196
-6225
-6228
-6232
-6221
-6238
-6249
-6252
-6254
-6256
-6260
-6269
-6271
-6263
-6272
-6271
-6272
-6271
-6285
-6308
-6319
-6327
-6334
-6337
-6356
-6385
-6380
-6387
-6395
-6396
-6392
-6395
-6398
-6400
-6401
-6396
-6399
-6400
-6380
-6379
-6380
-6377
-6397
-6398
-6396
-6415
-6419
-6438
-6449
-6465
-6459
-6461
-6463
-6466
-6492
-6493
-6502
-6501
-6503
-6510
-6511
-6512
-6505
-6506
-6508
-6525
-6523
-6530
-6536
-6535
-6539
-6544
-6545
-6534
-6532
-6537
-6542
-6543
-6544
-6545
-6559
-6560
-6577
-6578
-6580
-6581
-6582
-6591
-6597
-6581
-6595
-6608
-6620
-6624
-6632
-6636
-6639
-6637
-6645
-6648
-6650
-6651
-6645
-6648
-6661
-6658
-6659
-6668
-6667
-6666
-6684
-6700
-6701
-6730
-6736
-6746
-6749
-6750
-6751
-6741
-6728
-6729
-6762
-6763
-6792
-6795
-6796
-6813
-6827
-6835
-6843
-6844
-6852
-6854
-6856
-6868
-6870
-6876
-6874
-6865
-6870
-6867
-6870
-6877
-6887
-6881
-6869
-6871
-6874
-6875
-6876
-6902
-6903
-6901
-6902
-6912
-6913
-6912
-6913
-6927
-6928
-6935
-6936
-6942
-6943
-6942
-6943
-6953
-6954
-6961
-6989
-6992
-6993
-6997
-7018
-7022
-7041
-7052
-7055
-7058
-7049
-7050
-7051
-7047
-7064
-7059
-7074
-7082
-7083
-7097
-7102
-7092
-7094
-7101
-7143
-7165
-7176
-7178
-7183
-7180
-7203
-7204
-7207
-7211
-7217
-7220
-7212
-7215
-7217
-7223
-7207
-7214
-7213
-7215
-7214
-7212
-7219
-7226
-7225
-7230
-7239
-7240
-7241
-7248
-7247
-7254
-7258
-7262
-7280
-7298
-7297
-7307
-7308
-7316
-7314
-7339
-7340
-7359
-7356
-7383
-7382
-7385
-7397
-7399
-7410
-7437
-7440
-7439
-7457
-7455
-7462
-7463
-7464
-7465
-7477
-7478
-7494
-7500
-7507
-7512
-7547
-7558
-7559
-7571
-7572
-7575
-7608
-7633
-7636
-7629
-7628
-7633
-7635
-7641
-7659
-7663
-7677
-7694
-7708
-7701
-7697
-7682
-7684
-7675
-7664
-7672
-7675
-7669
-7671
-7672
-7684
-7688
-7701
-7712
-7741
-7727
-7733
-7735
-7736
-7737
-7744
-7748
-7749
-7750
-7736
-7737
-7752
-7755
-7756
-7757
-7791
-7790
-7785
-7791
-7812
-7825
-7816
-7819
-7824
-7829
-7855
-7846
-7854
-7827
-7831
-7835
-7836
-7845
-7848
-7861
-7862
-7864
-7847
-7858
-7877
-7878
-7888
-7885
-7881
-7878
-7883
-7884
-7882
-7883
-7901
-7916
-7922
-7909
-7915
-7929
-7942
-7953
-7954
-7951
-7967
-7963
+forward 2
+forward 2
+down 7
+forward 6
+down 7
+forward 4
+down 7
+up 2
+forward 4
+down 2
+down 4
+down 5
+forward 4
+up 1
+up 2
+forward 9
+forward 7
+down 1
+forward 4
+forward 7
+forward 9
+down 2
+down 3
+forward 1
+forward 4
+forward 6
+up 2
+forward 6
+down 2
+down 5
+up 4
+down 5
+forward 6
+down 7
+down 4
+up 5
+forward 9
+forward 5
+down 8
+forward 3
+forward 1
+down 7
+down 5
+forward 2
+down 3
+forward 8
+down 1
+forward 4
+up 8
+up 8
+up 8
+forward 2
+down 3
+down 5
+up 8
+forward 1
+forward 3
+up 1
+up 2
+up 4
+down 8
+forward 5
+down 9
+down 9
+forward 9
+up 3
+down 2
+down 9
+up 8
+forward 3
+up 2
+down 7
+forward 9
+forward 1
+up 1
+forward 9
+forward 1
+down 1
+forward 7
+up 3
+up 5
+forward 3
+forward 8
+forward 4
+down 3
+forward 5
+forward 4
+forward 2
+down 2
+down 3
+forward 1
+up 2
+up 2
+down 9
+down 6
+down 6
+up 2
+down 6
+forward 6
+forward 5
+down 8
+up 3
+up 2
+up 1
+forward 8
+down 3
+down 5
+forward 8
+forward 7
+down 9
+down 7
+down 9
+down 2
+forward 8
+down 9
+forward 2
+forward 2
+down 5
+up 8
+forward 9
+down 7
+down 9
+forward 2
+forward 9
+forward 1
+forward 3
+forward 1
+forward 3
+down 4
+forward 6
+forward 4
+down 7
+up 4
+up 5
+forward 1
+down 4
+down 8
+down 3
+down 8
+up 3
+forward 2
+up 7
+down 1
+down 7
+down 3
+forward 3
+forward 4
+up 8
+down 2
+forward 8
+down 8
+up 8
+up 5
+forward 5
+forward 1
+forward 5
+up 4
+down 5
+down 1
+forward 3
+forward 4
+down 8
+down 9
+forward 4
+down 5
+down 5
+forward 9
+forward 7
+down 3
+down 4
+forward 2
+down 7
+down 3
+down 9
+down 8
+forward 6
+forward 3
+forward 1
+forward 5
+down 4
+down 4
+forward 9
+down 9
+down 5
+up 8
+forward 1
+forward 3
+down 1
+down 4
+forward 1
+up 5
+down 9
+forward 8
+down 8
+down 2
+down 3
+forward 2
+forward 9
+forward 7
+up 3
+down 3
+forward 4
+down 8
+forward 7
+down 3
+forward 3
+down 5
+forward 8
+forward 7
+forward 4
+down 2
+up 5
+forward 9
+forward 8
+down 7
+up 5
+up 8
+down 4
+down 9
+forward 5
+up 6
+forward 7
+down 4
+forward 8
+up 4
+up 2
+down 8
+forward 4
+down 8
+down 3
+down 3
+forward 1
+up 7
+forward 5
+forward 1
+down 5
+forward 4
+down 3
+down 4
+forward 4
+down 5
+up 9
+forward 6
+down 6
+up 6
+down 8
+forward 2
+down 9
+down 8
+forward 7
+down 2
+forward 1
+forward 4
+down 7
+forward 1
+up 8
+forward 6
+forward 2
+forward 5
+up 1
+forward 6
+up 7
+down 8
+down 5
+down 2
+forward 4
+forward 3
+down 7
+up 5
+forward 1
+forward 2
+forward 3
+forward 6
+down 9
+down 2
+forward 7
+up 3
+down 4
+forward 3
+forward 3
+forward 6
+up 2
+down 4
+forward 8
+down 3
+down 4
+forward 1
+forward 3
+forward 8
+forward 1
+forward 6
+forward 1
+forward 7
+down 8
+up 3
+up 5
+forward 4
+forward 6
+down 3
+forward 5
+forward 5
+down 9
+forward 4
+down 5
+forward 6
+down 1
+forward 2
+forward 3
+forward 2
+up 4
+forward 9
+forward 7
+forward 6
+up 1
+down 6
+down 1
+forward 5
+up 4
+up 9
+forward 5
+forward 3
+up 9
+down 4
+forward 7
+up 9
+down 7
+forward 5
+down 4
+down 9
+up 4
+forward 2
+forward 2
+forward 1
+forward 3
+forward 4
+down 3
+down 5
+up 9
+forward 8
+up 5
+down 3
+forward 5
+down 4
+forward 1
+forward 1
+up 5
+down 7
+up 7
+down 3
+forward 7
+down 3
+down 3
+down 5
+down 2
+down 7
+down 5
+down 1
+up 3
+forward 5
+forward 9
+up 1
+down 8
+up 5
+forward 4
+down 5
+forward 5
+down 3
+up 8
+forward 2
+up 7
+down 4
+forward 1
+up 6
+down 7
+down 4
+forward 9
+forward 3
+forward 7
+up 5
+down 1
+down 3
+up 2
+forward 3
+down 8
+up 7
+forward 9
+forward 9
+forward 9
+down 3
+forward 4
+forward 9
+down 6
+up 1
+up 7
+down 3
+forward 4
+forward 9
+down 9
+up 4
+down 2
+forward 6
+forward 4
+down 5
+up 3
+down 6
+up 4
+down 5
+down 7
+down 3
+up 1
+down 2
+forward 1
+forward 8
+up 7
+forward 4
+down 5
+down 3
+up 7
+forward 1
+forward 7
+up 6
+forward 4
+forward 5
+forward 3
+forward 1
+down 5
+up 3
+up 3
+down 8
+forward 1
+forward 2
+up 6
+down 3
+down 6
+down 5
+down 4
+up 1
+down 9
+forward 3
+down 8
+up 9
+down 3
+forward 6
+down 8
+forward 2
+forward 4
+forward 6
+forward 3
+forward 6
+up 6
+up 3
+down 6
+up 1
+forward 9
+forward 2
+up 6
+forward 7
+down 5
+forward 5
+forward 7
+down 6
+down 9
+forward 9
+forward 1
+up 4
+forward 3
+forward 2
+forward 2
+up 4
+down 7
+down 2
+up 2
+down 2
+up 9
+forward 4
+forward 3
+forward 3
+up 4
+down 7
+forward 5
+down 5
+forward 1
+down 4
+forward 4
+up 1
+down 5
+forward 2
+up 3
+up 1
+down 9
+up 9
+down 3
+forward 1
+down 6
+forward 8
+down 5
+forward 7
+down 4
+forward 2
+down 3
+down 1
+forward 6
+forward 4
+down 9
+forward 3
+up 4
+up 8
+down 2
+up 5
+up 8
+up 7
+down 2
+down 9
+forward 8
+down 4
+up 7
+forward 2
+up 4
+forward 7
+down 3
+down 3
+down 6
+up 3
+down 6
+down 6
+up 7
+down 6
+up 9
+down 6
+forward 3
+forward 8
+forward 3
+down 9
+forward 6
+forward 8
+down 7
+forward 3
+forward 7
+forward 3
+forward 8
+forward 6
+down 9
+up 4
+forward 1
+forward 6
+forward 2
+forward 4
+down 4
+down 9
+forward 7
+forward 4
+forward 4
+up 3
+up 6
+forward 4
+forward 7
+forward 4
+down 2
+forward 8
+up 4
+forward 8
+up 2
+up 4
+down 5
+forward 5
+up 2
+up 8
+up 9
+forward 6
+forward 2
+up 9
+forward 5
+up 3
+forward 8
+forward 8
+down 5
+forward 6
+up 6
+down 6
+down 1
+forward 2
+down 1
+down 5
+forward 2
+down 3
+up 7
+forward 6
+up 9
+down 3
+up 3
+forward 3
+down 9
+down 4
+down 2
+forward 7
+forward 2
+down 4
+forward 5
+up 1
+down 6
+down 6
+up 2
+down 2
+down 4
+down 4
+forward 8
+down 3
+down 5
+down 3
+up 2
+down 6
+down 9
+up 8
+forward 3
+down 9
+down 6
+down 7
+down 6
+forward 9
+up 1
+forward 9
+down 8
+forward 8
+up 5
+down 8
+forward 5
+down 6
+down 9
+forward 1
+up 5
+up 5
+forward 4
+forward 1
+forward 6
+down 1
+down 4
+down 3
+down 1
+down 1
+down 9
+down 3
+forward 6
+up 9
+up 4
+down 1
+up 6
+forward 3
+down 2
+down 8
+forward 1
+forward 8
+forward 4
+down 4
+down 5
+up 5
+up 5
+forward 7
+forward 6
+forward 4
+down 5
+forward 7
+down 4
+forward 2
+forward 5
+forward 3
+forward 5
+up 6
+up 9
+down 6
+forward 8
+down 3
+up 2
+forward 8
+down 9
+forward 9
+down 3
+down 4
+down 5
+up 3
+forward 6
+forward 6
+forward 8
+up 6
+up 4
+forward 2
+down 1
+down 5
+forward 1
+forward 8
+up 5
+down 2
+forward 4
+down 9
+up 5
+down 8
+forward 6
+forward 3
+down 8
+up 1
+down 5
+down 6
+forward 2
+forward 7
+down 8
+forward 2
+forward 8
+forward 1
+down 1
+down 3
+down 8
+down 1
+forward 1
+forward 8
+up 4
+up 5
+forward 2
+forward 5
+forward 5
+forward 9
+forward 2
+forward 4
+forward 4
+down 1
+up 8
+forward 3
+down 9
+forward 9
+up 5
+forward 7
+forward 3
+up 5
+up 5
+down 9
+forward 9
+up 2
+forward 1
+forward 1
+down 5
+down 7
+forward 2
+up 8
+up 7
+down 4
+down 6
+down 6
+down 6
+forward 4
+forward 7
+down 6
+forward 3
+forward 5
+down 2
+up 3
+forward 3
+forward 6
+forward 9
+forward 7
+forward 6
+down 4
+down 9
+forward 4
+forward 4
+down 8
+down 7
+down 1
+down 6
+up 7
+forward 3
+forward 9
+forward 9
+up 7
+forward 2
+up 5
+up 6
+down 7
+down 7
+down 5
+forward 8
+down 1
+up 4
+down 4
+forward 4
+forward 3
+forward 7
+forward 4
+down 6
+down 3
+down 3
+forward 6
+forward 7
+forward 6
+up 5
+down 9
+forward 9
+forward 5
+up 5
+down 9
+up 8
+down 6
+down 8
+down 8
+down 8
+forward 2
+down 8
+down 4
+down 6
+forward 8
+forward 3
+forward 2
+down 5
+down 3
+forward 1
+forward 2
+up 9
+forward 6
+down 8
+up 2
+down 2
+forward 7
+up 6
+up 2
+forward 1
+down 2
+forward 7
+forward 4
+down 6
+forward 4
+up 4
+forward 3
+down 2
+down 5
+up 5
+down 2
+down 1
+down 9
+forward 3
+down 5
+up 8
+down 6
+forward 3
+forward 9
+up 6
+down 2
+forward 6
+forward 7
+down 1
+up 9
+up 9
+up 9
+up 4
+forward 2
+down 7
+down 1
+forward 8
+down 2
+down 1
+forward 9
+forward 8
+up 8
+down 5
+forward 8
+down 1
+down 4
+down 3
+down 1
+forward 2
+down 2
+down 6
+forward 5
+down 9
+forward 8
+down 9
+up 6
+up 5
+forward 8
+forward 3
+down 9
+up 6
+down 8
+down 3
+down 2
+up 1
+up 9
+up 7
+up 1
+up 4
+forward 7
+down 8
+up 3
+forward 1
+up 3
+up 7
+forward 4
+up 3
+down 1
+forward 3
+forward 4
+forward 7
+down 4
+down 4
+down 2
+up 1
+up 5
+up 3
+forward 6
+forward 6
+forward 9
+down 9
+forward 2
+up 3
+forward 3
+down 2
+down 4
+forward 6
+forward 7
+down 5
+forward 9
+up 7
+down 9
+down 1
+down 1
+forward 1
+up 1
+up 5
+down 5
+forward 4
+up 3
+down 1
+down 3
+forward 3
+forward 6
+up 4
+down 2
+forward 1
+forward 5
+forward 3
+forward 2
+forward 4
+down 3
+forward 2
+down 4
+down 7
+up 4
+down 7
+forward 8
+forward 2
+down 4
+down 2
+forward 8
+up 7
+forward 1
+up 4
+forward 4
+up 7
+forward 2
+forward 7
+forward 9
+down 8
+down 2
+forward 8
+down 3
+up 5
+forward 3
+up 9
+forward 8
+forward 5
+up 2
+down 5
+down 9
+up 9
+forward 1
+forward 3
+down 3
+down 6
+forward 9
+forward 5
+down 4
+up 7
+forward 4
+forward 3
+down 2
+up 1
+forward 3
+down 4
+down 8
+up 4
+down 9
+forward 6
+down 7
+down 3
+down 9
+forward 3
+down 8
+forward 7
+forward 7
+down 1
+down 1
+forward 1
+down 4
+forward 8
diff --git a/02/part1.php b/02/part1.php
new file mode 100644
index 0000000..c45c5e4
--- /dev/null
+++ b/02/part1.php
@@ -0,0 +1,15 @@
+<?php
+
+$increased   = 0;
+$inputStream = fopen('input', 'r');
+$horizontal  = $depth = 0;
+
+while (($line = fgets($inputStream)) !== false) {
+    [$instruction, $value] = explode(' ', trim($line));
+    match ($instruction) {
+        'down' => $depth += (int)$value,
+        'up' => $depth -= (int)$value,
+        'forward' => $horizontal += (int)$value,
+    };
+}
+echo $depth * $horizontal; // 1635930
diff --git a/02/part2.php b/02/part2.php
new file mode 100644
index 0000000..c191616
--- /dev/null
+++ b/02/part2.php
@@ -0,0 +1,23 @@
+<?php
+
+$increased   = 0;
+$inputStream = fopen('input', 'r');
+$horizontal  = $depth = $aim = 0;
+
+while (($line = fgets($inputStream)) !== false) {
+    [$instruction, $value] = explode(' ', trim($line));
+    $value = (int)$value;
+    switch ($instruction) {
+        case 'down':
+            $aim   += $value;
+            break;
+        case 'up':
+            $aim   -= $value;
+            break;
+        case 'forward':
+            $horizontal += $value;
+            $depth      += $value * $aim;
+            break;
+    }
+}
+echo $depth * $horizontal; // 1781819478
diff --git a/03/input b/03/input
new file mode 100644
index 0000000..992c2fe
--- /dev/null
+++ b/03/input
@@ -0,0 +1,1000 @@
+011000110010
+111011101000
+110100110010
+011010101110
+111010100100
+100111111100
+110001110000
+000100100100
+000110101101
+101011100110
+110011000110
+111100101111
+000011010111
+001111100100
+100010101101
+101100000010
+001100001111
+001001001110
+100100110000
+000000011001
+000111001000
+101000110110
+110011010000
+101110111011
+111000000011
+101100110100
+111110001010
+001101001111
+100101011001
+010101111111
+111100111001
+010100111010
+111110100111
+100101110111
+110001001100
+110111001110
+011111011011
+011111010111
+001100101111
+110111011101
+000110010111
+001100000001
+111101100100
+100111110010
+111010001010
+000010000001
+000011101110
+110011100101
+011101100010
+101100010101
+010110110101
+000010111001
+100111010101
+000101010001
+000000110111
+110010000111
+000101010111
+011100101000
+011111101011
+101001110110
+000000110100
+100101001100
+111100010101
+001000001101
+111101101011
+110101010010
+011101000100
+100000100011
+111110110110
+001010010111
+111001010101
+011011011100
+001010010001
+001101111110
+100100111010
+100011000110
+111010000111
+000111000101
+000110000011
+111000011110
+011110110001
+011111111011
+100001000010
+001011111011
+101111101011
+001111110001
+010001000000
+011001100111
+110100101110
+001001110110
+101110011101
+110011101001
+101111000010
+110000000110
+011000010001
+010001011111
+111000001111
+000101101011
+110011010001
+000011110101
+101010110010
+001111001001
+001011000100
+001001101001
+010011010101
+010011011011
+101101011100
+011111011001
+101011100001
+000100011011
+111011000011
+001001001101
+111110011111
+110101101111
+100100111110
+110000110100
+011010110111
+101000000100
+111110010100
+111111001100
+100101100110
+111111010000
+011011100111
+000111100100
+011011100000
+111011100000
+001001111010
+010111010111
+011100110101
+101010111100
+101111110101
+110101001110
+110000001011
+100111011000
+011010011000
+111101010011
+101011010110
+110110001101
+100111010000
+110100000001
+110001010001
+001000110011
+110010110101
+010000011010
+001010111101
+001000110001
+111111000101
+111101010101
+001000000010
+101010101001
+000000010011
+101111010101
+000100111001
+001111001111
+000100000001
+100010101001
+010011101011
+011001101100
+011001001100
+110010111110
+000000010000
+010010110110
+101101110101
+010001101010
+111001011100
+001100000110
+110001110010
+100001001001
+101011000010
+111011100011
+011101010010
+011000100000
+100000110111
+100100100101
+100110101011
+011101000111
+011001010101
+110011100010
+001100100001
+111000010110
+000110100110
+001001011000
+101000011010
+001101001101
+111110000111
+001110111011
+001111101110
+111000101101
+000111010011
+110101010000
+010101000011
+110011100110
+111001011111
+011101011111
+001000101110
+001111001000
+001111010000
+110010010010
+100010110110
+000011101000
+010001100111
+101100001001
+100000000110
+010101000111
+000001100111
+101010111000
+000101010101
+001011011010
+110011000111
+000101000101
+111111011011
+111001100010
+101111110110
+111110011011
+110011010110
+100110001101
+111100000000
+101101010001
+011100101110
+100011101110
+111100010010
+010111111010
+100000101000
+011001111001
+100001010100
+100111011101
+001101100011
+001001110100
+101011010100
+001101111000
+101111010010
+110001000111
+100001000101
+100110110011
+000011101100
+111000000000
+010110000011
+011001000111
+010101100101
+110100100010
+111100100100
+010011011101
+101100100110
+011111111001
+101100111001
+000000110110
+011111110110
+000110110101
+111111010110
+111000111001
+111111100001
+010000111111
+000100000111
+010101001110
+011001011101
+110111100101
+100011001001
+110100101101
+110110010111
+101001010111
+011011010011
+100100000000
+111001101000
+001101010101
+000100010100
+100001101000
+011001101110
+100111100111
+011001111110
+101011111111
+100111100001
+000001011110
+010110100011
+100100010110
+001010011110
+101101111001
+000100111100
+101011011011
+011010000111
+001011011001
+001110110000
+110001001011
+011100010110
+111011110101
+110100000110
+101001011100
+010010001000
+111001110101
+000111000011
+110111010110
+011111111010
+101000011111
+111001100101
+011100000000
+010101010111
+100111111011
+110100001111
+010111011101
+011000100010
+111111000110
+111011100110
+100010111100
+110100111000
+100001010101
+101101100011
+011001001101
+011011111000
+000011111010
+011010110001
+001000110010
+011000111110
+010101110011
+101011110100
+100011011011
+111010000010
+011010101000
+101110111111
+011110111011
+011101101111
+110010011001
+010001100011
+001101010011
+100001001010
+110110110111
+010010100000
+100110000100
+110110101110
+100101101001
+110101001111
+011101110110
+010111111001
+000010101110
+000000001000
+111110000000
+100010010011
+011100011101
+100100001000
+101001000111
+011000001111
+100111111001
+000001000011
+000111100101
+111001010001
+110011011010
+101000100111
+111101100010
+110100001011
+111111001101
+001001001001
+010110010110
+001111010101
+011010010100
+001110001000
+000011110010
+010111111100
+101101001011
+011001111111
+000110110111
+101001001110
+100000011101
+100100110111
+111001110110
+100110011001
+001010000101
+111011000110
+110010010101
+000110000001
+111111010111
+100100100000
+000110011111
+000111110011
+100100101001
+100100001100
+110010001110
+010100001010
+101001000010
+001100000000
+001011111001
+011100001001
+010010000101
+110101100111
+101110111100
+111011000001
+000111010111
+010000000100
+101101001100
+101010001100
+000101011010
+110011101011
+110101010001
+000010111000
+101010011111
+010011011010
+011011001000
+010100110101
+010111100111
+011011000111
+100001110011
+101000000010
+000110010000
+101011101011
+010000010100
+011100000100
+001010111010
+011111001001
+000101110101
+100001001100
+111000011101
+001101101110
+010100011110
+100101111100
+000010100000
+111100001001
+001110000010
+100000100110
+011000001011
+110110110101
+001100000101
+000001100110
+000001010111
+110101011101
+001010010101
+110011101100
+110101110010
+000101100010
+111000100000
+001110111001
+010100110100
+101000100010
+011110100101
+011110000111
+000011000111
+101101101001
+000011001001
+000111011010
+000110001000
+011100101011
+100110110110
+001110100011
+001110100101
+111011101110
+100110110111
+111000000110
+001110001111
+011001101011
+111000110100
+000101110111
+001001001111
+010111101010
+100010101110
+111001100000
+111111000000
+111010101111
+010010010010
+110011010111
+000001101010
+101101111110
+100011000111
+100111001110
+011110111010
+001101000101
+100000001101
+011001110000
+001011100001
+011101000000
+100010010101
+111111011111
+000001110001
+001110010010
+111000110011
+010001011011
+100011010010
+001110011101
+000100001010
+111000001000
+001001111011
+010000111000
+010111000010
+110010000011
+001111001100
+001100101001
+011010110010
+001010001111
+100010100011
+100110111111
+000101110110
+010100000001
+110010011110
+100000111001
+011101100000
+001010110101
+101101011111
+010101111010
+110101011111
+100110111110
+011101010100
+110101001010
+010100110111
+101100000101
+100000100010
+000011100110
+010000010011
+000010101101
+101001111011
+000100110100
+001110110001
+100010101100
+111010001011
+000000101110
+111101000100
+000011011110
+100010001000
+001101101010
+101100100100
+000101001111
+101000101111
+001110101001
+001101010100
+000011000010
+001001100000
+111101010010
+000001101001
+010011110000
+000100110000
+010000101011
+011110011111
+110011100011
+010000110011
+110101111000
+101000001010
+110101100101
+010110100010
+101001000110
+101101111100
+011001011000
+100011101011
+110111111110
+111000111110
+110010001111
+101010100011
+001100100111
+001111100111
+101101001111
+100111011110
+101010101100
+000100010010
+111011110001
+101111111101
+000001000010
+101010110110
+001100001010
+001111011111
+110110111111
+100110010111
+001011001011
+000011001101
+011000110011
+000100101111
+100111010100
+011000011011
+000010101010
+010111110111
+000100011001
+110110001100
+100010011100
+111110000001
+101110011100
+111011110100
+001101100101
+000110001111
+001101110111
+000010101001
+111010101000
+010000001001
+100100011001
+100001011000
+011110110000
+000001010110
+101000001000
+001100011110
+110010100001
+000011100001
+111111001110
+011110011110
+100110111100
+100001011100
+100011011010
+011000011110
+110011000101
+001100011100
+011110010010
+110000101110
+010011100111
+010111010110
+111010011001
+110000011010
+000101101000
+010111001100
+001000010011
+001110101110
+000101101001
+110111101001
+111101011000
+000011110111
+011010101100
+110110110110
+000011011100
+111110001111
+100110100001
+110100010111
+101001111000
+001111000011
+110111011010
+101001100001
+001001010001
+011010101010
+111010100010
+010011100010
+111011011010
+001000000110
+011111010010
+100000010000
+000001110011
+001010111100
+110000110110
+110011001010
+001011001100
+100010100001
+100110010000
+100100011011
+100111001100
+100101001001
+000100101101
+101000101000
+010011100001
+111101101000
+011010010001
+100100110110
+110001011101
+011001111010
+100101000000
+011110100000
+001000001100
+111000101010
+001011000010
+110000101100
+110011011000
+011010100101
+100111001011
+110110111100
+100101101000
+000010111100
+010010010101
+100110101100
+010101101111
+101100111111
+001111111011
+100000111101
+010010111100
+001011110000
+111010011000
+000101111110
+011011111011
+000001101011
+000111111000
+000111010001
+000111110010
+100000111111
+110100101100
+001010100100
+001111011010
+111011010010
+111111000011
+001000101111
+000000000010
+111011100010
+111000110000
+000000110010
+111110111011
+000110100111
+101000000011
+011101100011
+001010000011
+011001111101
+000101011101
+101101110010
+011011101101
+101011110001
+110110010110
+101110111000
+111010110111
+001001111100
+100101011110
+101000010100
+101000110010
+001110110111
+000001000111
+100101000001
+011111011100
+101010001000
+001101010000
+110101001000
+001010010011
+101001011000
+111101010001
+100000110100
+110101000011
+000011101111
+001011000101
+110100101011
+010000011000
+100011001101
+101010001111
+001011101011
+011110010001
+011010001101
+111110011001
+110110001111
+100100111011
+110001110011
+110000100001
+010010010000
+011111010011
+101100111011
+010111100110
+111000101001
+000000110001
+000010001110
+010110101111
+001100001100
+101011011001
+000010001010
+101100100111
+011011101010
+111011010001
+001011101010
+110011111011
+011101000101
+101101100100
+101100111010
+100001000100
+111001111111
+110001000011
+000101110000
+100101000010
+000000000100
+110001000000
+110111010001
+010011101010
+010101110001
+111101110011
+000000101011
+011011111101
+100101110010
+110000111101
+000110111101
+100011000100
+011011111100
+101110101011
+110100110101
+110001001010
+010111001111
+010011100101
+011010011111
+011000011111
+110000010000
+011000001010
+111111001010
+010001000011
+110110000110
+110110111000
+010110011011
+100000101110
+101111100100
+110011100100
+011010111000
+011001001111
+101000100000
+001010001000
+001000101011
+111101111100
+111110100000
+001111111010
+000000111101
+100011100010
+000101101101
+011111000111
+010010001001
+000001110100
+010000010010
+101110011111
+001010000001
+011100010111
+111001111000
+001100101011
+100111101101
+111011011100
+100001101110
+100100010010
+000110111111
+010011101100
+110001100100
+011010111100
+000000101100
+001011110110
+011101100001
+000100111101
+111011111111
+000101100011
+101011001011
+110110101001
+000001100101
+010111100001
+110001001101
+011000000000
+101100001110
+101101011101
+100011110110
+100101000100
+001001011100
+100101100000
+010000101010
+001001101100
+011111110010
+110101101000
+100000100101
+011111010100
+111110000100
+000010110001
+110110110001
+001001100010
+101000001110
+101111010011
+101101100010
+011110100110
+011100100010
+000001110110
+111010010100
+111111111110
+111010100101
+100100110001
+000100001001
+100010111110
+001111000000
+110110111110
+100111110101
+110000110000
+001000101100
+011111000110
+011000110100
+111010100111
+010101000010
+110111100011
+011111111000
+100111000101
+000010011111
+101010100100
+111001010011
+101111101101
+000111011110
+100110001011
+110101010111
+000010010000
+100111101110
+111101011100
+001000101010
+001011001001
+011010100000
+001100010100
+110111000001
+100100011100
+110111000100
+011001011011
+111000010100
+101110100000
+100000010001
+100000001001
+001010000110
+100011011110
+100111011011
+100110110100
+111000110010
+000001001011
+111001110111
+011101000010
+010101100110
+101011110011
+111100011110
+111100011101
+101110011110
+101010001101
+111100000110
+000111111111
+001010101101
+011101000011
+100000001110
+110101101100
+000100110001
+111101101001
+101010001001
+001101011010
+011000000101
+011101101001
+011000100001
+100101010100
+011000101100
+010110110010
+000010011011
+110101001011
+101001111001
+101000101001
+011001100010
+100010001011
+001100100110
+100000111011
+001111100001
+101110001101
+101010000010
+110010101100
+100100000100
+011001111011
+101000010001
+110101101101
+101000000001
+101111101000
+011001110110
+111101010110
+110001011111
+110111110111
+010010110100
+111111100000
+110100011010
+000110100011
+010001111010
+010111100101
+000001110000
+011110000110
+101010111010
+001000010111
+000001000101
+010101001010
+011111010000
+000011100011
+100011101010
+111011011001
+111111100101
+010000101101
+011110010111
+110100101010
+000110101111
+110101010011
+101110000010
+110101011001
+110110111101
+010101110100
+101001101011
+101100000111
+010001111110
+101110001110
+011011110001
+010111000101
+001010111000
+001010000111
+001111001110
+100010011110
+100000110010
+100000011111
+001000100010
+010111001110
+011110011100
+010001101101
+101011001001
+000001001001
+100110011000
+000001111010
+110010101110
+101101001000
+001011100110
+000101001011
+110100010101
+110101000010
+110010111101
+011110001111
+000011010001
+010000111101
+011110001110
+110110111001
+101111111011
+101011111110
+110001111101
+011010010110
+111011011111
+110100100001
+100110101110
+101010011000
+100001001101
+101001110000
+001100111001
+100001111011
+111101110001
diff --git a/03/part1.php b/03/part1.php
new file mode 100644
index 0000000..ada3330
--- /dev/null
+++ b/03/part1.php
@@ -0,0 +1,19 @@
+<?php
+
+$input = file('input', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
+$input = array_map(fn($line) => str_split($line), $input);
+
+$o2 = $co2 = $input;
+
+for ($i = 0; $i < count($input[0]); $i++) {
+    if (count($o2) > 1) {
+        $bit = (int)(array_sum($column = array_column($o2, $i)) >= ceil(count($column) / 2));
+        $o2 = array_filter($o2, fn($line) => $line[$i] == $bit);
+    }
+
+    if (count($co2) > 1) {
+        $bit = (int) (array_sum($column = array_column($co2, $i)) >= ceil(count($column) / 2));
+        $co2 = array_filter($co2, fn ($line) => $line[$i] != $bit);
+    }
+}
+echo bindec(implode('', reset($co2))) * bindec(implode('', reset($o2)));
\ No newline at end of file
diff --git a/03/part2.php b/03/part2.php
new file mode 100644
index 0000000..d40b7bb
--- /dev/null
+++ b/03/part2.php
@@ -0,0 +1,11 @@
+<?php
+
+$input = file('input', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
+$input = array_map(fn($line) => str_split($line), $input);
+$gamma = $epsilon = [];
+for ($i = 0; $i < count($input[0]); $i++) {
+    $bit = (int) (array_sum($column = array_column($input, $i)) >= ceil(count($column) / 2));
+    $gamma[] = $bit;
+    $epsilon[] = ~$bit & 1;
+}
+echo bindec(implode('', $gamma)) * bindec(implode('', $epsilon)).PHP_EOL;